CN101026394A - Method and apparatus for secured communication between bluetooth devices - Google Patents

Method and apparatus for secured communication between bluetooth devices Download PDF

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Publication number
CN101026394A
CN101026394A CNA2007100070697A CN200710007069A CN101026394A CN 101026394 A CN101026394 A CN 101026394A CN A2007100070697 A CNA2007100070697 A CN A2007100070697A CN 200710007069 A CN200710007069 A CN 200710007069A CN 101026394 A CN101026394 A CN 101026394A
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CN
China
Prior art keywords
bluetooth
blue
device address
interim
tooth
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Granted
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CNA2007100070697A
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Chinese (zh)
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CN101026394B (en
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金相敦
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication of CN101026394B publication Critical patent/CN101026394B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0869—Network architectures or network communication protocols for network security for authentication of entities for achieving mutual authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Provided is a method and apparatus for secured communication between Bluetooth devices. A temporary Bluetooth Device Address (BD_ADDR) is generated and set if a Bluetooth communication request is generated in a secured mode and Bluetooth communication is performed using the temporary BD_ADDR; when the Bluetooth communication is terminated, the temporary BD_ADDR is released and eliminated and a default BD_ADDR is set. Thus, it is possible to prevent another Bluetooth device from performing the Bluetooth communication without a bonding process, thereby enabling secured communication.

Description

The method and apparatus that is used for secured communication between Bluetooth devices
Technical field
Present invention relates in general to Bluetooth  (hereinafter referred to as " bluetooth ") communication, particularly, relate to a kind of bluetooth safety communicating method and equipment.
Background technology
Bluetooth is the standard that is designed to support such as the short-distance wireless communication cheaply between the mobile device of portable PC and portable phone.Bluetooth is used the radio frequency in 2.45GHz industry, science and medical treatment (ISM) frequency band, and it does not need wireless permission, make thus various digital devices can be under without any the situation of physical connection fully switched voice and data each other.For example, can in portable phone or laptop computer, adopt blue tooth wireless technology, thereby they can communicate with one another not having under the situation of cable.In addition, Bluetooth system can be incorporated into all digital devices, such as PDA(Personal Digital Assistant), laptop computer, facsimile machine, keyboard and joystick.
Fig. 1 is the diagrammatic sketch that the general communication between the blue-tooth device is shown.Blue-tooth device refers to the digital device that comprises the bluetooth module that is used for Bluetooth communication.Comprise user terminal 100 foundation of bluetooth module and the wireless connections of contiguous blue-tooth device 110 to 150, terminal supports point-to-point connection to be connected with point-to-multipoint.When user terminal 100 is carried out detection to blue-tooth device, will be presented on the user terminal 100 about the information of contiguous blue-tooth device 110 to 150.Then, user terminal 100 begins to be used for process is set up in the connection that user terminal 100 is connected to the device that the blue-tooth device that detected expects.In this case, the user terminal 100 that request is connected to another blue-tooth device is called " main device ".The other side's blue-tooth device that receives connection request is called " from device ".Commutative master slave relation after connecting foundation.
For example, when bluetooth cellular phone was communicated by letter, the connection between the bluetooth cellular phone was essential for the exchange of the phone data under the intercom pattern or for calling out.In order to set up two wireless connections between the blue-tooth device, must carry out the verification process that is called " pairing " between the described device.That is to say that first device must be operated for the connection that allows it under inquiry scan mode or page scan mode.Second device must send the query messages of the bluetooth device address (BD_ADDR) that comprises it by user interface in order to attempt being connected to first device, is positioned near the other side's device of second device so that find.The blue-tooth device that receives query messages will comprise that the query response message of its BD_ADDR sends to corresponding blue-tooth device.The blue-tooth device that receives query response message shows and the corresponding blue-tooth device of query response message, and attempts being connected to the device of being selected by the user.
In the pairing process, main device presents PIN (PIN) CodeWindow to the user, with request and the corresponding PIN code of the device that will be connected.If main device is attempted connecting, then also present the window of request PIN code from device after the PIN code is transfused to.At this moment, if from the user input of device and the identical PIN code of PIN code by user's input of attempting connecting, then described two devices to/use the link key of PIN code, BD_ADDR and the random number (RAND) imported from exchange each other.
Provide link key to be used for the verification process between described two blue-tooth devices to described two blue-tooth devices.Yet described link key must only be used for the connection between described two blue-tooth devices.
Like this, in the search between two blue-tooth devices, pairing, authentication and the connection procedure, should use the BD_ADDR of each blue-tooth device.Described two blue-tooth devices storage BD_ADDR each other, even also do not eliminate after Bluetooth communication stops, therefore, the bluetooth that can carry out after binding is finished dealing with between described two blue-tooth devices connects.
As a result, in Bluetooth communication, there is serious safety issue.In other words, after binding was finished dealing with, user's blue-tooth device can be connected to another blue-tooth device under the situation that does not need User Recognition, and leakage of information unintentionally can take place.Particularly,, be retained such as the binding data of BD_ADDR, and be not eliminated, constituted havoc communications security although carry out disposable transmission/reception as the data of image file by Bluetooth communication.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of method and apparatus that is used for secured communication between Bluetooth devices.
Another object of the present invention is to provide a kind of method and apparatus that is used for secured communication between Bluetooth devices, wherein, the binding information of Bao Liuing becomes invalid after Bluetooth communication stops each other.
According to an aspect of the present invention, provide a kind of method that is used for secured communication between Bluetooth devices.Described method comprises: if produce the Bluetooth communication request under safe mode, then produce and be provided with interim bluetooth device address (BD_ADDR), use interim BD_ADDR to carry out Bluetooth communication, when stopping Bluetooth communication, discharge and eliminate described interim BD_ADDR and acquiescence BD_ADDR is set.
According to a further aspect in the invention, provide a kind of equipment that is used for secured communication between Bluetooth devices.Described equipment comprises: bluetooth module is used to use the bluetooth device address (BD_ADDR) of setting to carry out Bluetooth communication; And controller, be used for producing and be provided with interim BD_ADDR when request during safe Bluetooth communication, when stopping Bluetooth communication, discharge and eliminate interim BD_ADDR, and acquiescence BD_ADDR is set.
Description of drawings
By the detailed description of carrying out below in conjunction with accompanying drawing, above and other objects of the present invention, characteristics and advantage will become apparent, wherein:
Fig. 1 is the diagrammatic sketch that the general communication between the blue-tooth device is shown;
Fig. 2 is the block diagram according to blue-tooth device of the present invention; And
Fig. 3 A and Fig. 3 B are the flow charts that illustrates according to the operation of blue-tooth device of the present invention.
Embodiment
Now, describe the preferred embodiments of the present invention with reference to the accompanying drawings in detail.In the following description, for the sake of simplicity, will omit the known function incorporated into and the detailed description of configuration.
Now, with reference to the structure of Fig. 2 description according to blue-tooth device of the present invention.Blue-tooth device refers to the digital device that comprises the bluetooth module that is used for Bluetooth communication.For example, blue-tooth device can comprise the general digital device that comprises bluetooth module, such as PDA(Personal Digital Assistant), desktop PC, facsimile machine, keyboard and joystick.
In Fig. 2, the structure of typical blue-tooth device is shown: first blue-tooth device 200 and second blue-tooth device 300.Described two devices are carried out Bluetooth communication.In the following description, suppose that first blue-tooth device 200 initiates Bluetooth communications, be main device, second blue-tooth device 300 is destination apparatus, that is, receive the Bluetooth communication request from device.First blue-tooth device 200 can be the digital terminal as main device operation, such as, cell phone or desktop computer, second blue-tooth device 300 can be as the peripheral unit from the device operation, such as, keyboard, monitor or wireless headset.
With reference to Fig. 2, first blue-tooth device 200 comprises: first controller 210, first bluetooth module 220 and memory 230.
First bluetooth module 220 is carried out Bluetooth communication at controller and other blue-tooth device of first controller 210, allows thus to exchange radio signal between first controller 210 and other blue-tooth device.
Memory 230 storage is used to handle and control program, reference data, renewable retention data and the various multi-medium data of the operation of first controller 210, and memory 230 is as the working storage of first controller 210.
First controller 210 is controlled whole operations of first blue-tooth device 200, and controls the operation of bluetooth module 220 according to user's key input.If according to embodiments of the invention request safety Bluetooth communication, then first controller 210 produces interim bluetooth device address (BD_ADDR) and executive control operation, thereby bluetooth module 220 uses interim BD_ADDR to carry out Bluetooth communication.The Bluetooth communication request regarded as producing under following two kinds of situations: when the selection according to the user is set to main device with first blue-tooth device 200 and when being set to first blue-tooth device 200 from device by another blue-tooth device.After Bluetooth communication stopped, controller 210 discharged and eliminates the interim BD_ADDR that is provided with, and acquiescence BD_ADDR is set.Acquiescence BD_ADDR is the unique BD_ADDR that distributes to each blue-tooth device.
Second blue-tooth device 300 comprises second controller 310 and second bluetooth module 320.
Second controller 310 is controlled whole operations of second blue-tooth device 300, and controls the operation of second bluetooth module 320 according to user's key input.
Second bluetooth module 320 is carried out Bluetooth communication with other blue-tooth device under the control of second controller 310, allow the exchange of radio signal between second controller 310 and other blue-tooth device thus.
Shown in Fig. 3 A and Fig. 3 B according to the operation of first blue-tooth device 200 of the present invention.In Fig. 3 A, first blue-tooth device 200 is attempted being connected with another blue-tooth device.In Fig. 3 B, blue-tooth device is attempted carrying out Bluetooth communication with first blue-tooth device 200.
With reference to Fig. 3 A and Fig. 3 B, if first blue-tooth device 200 is answered after user's request enters safe mode in step 401, produce detection request from the user for contiguous blue-tooth device in step 403, then first blue-tooth device 200 enters step 405.In other words, user's request is to the detection of contiguous blue-tooth device, so that carry out Bluetooth communication with another blue-tooth device.First blue-tooth device 200 produces interim BD_ADDR, to use in Bluetooth communication.In step 407,200 broadcasting of first blue-tooth device comprise the query messages of the interim BD_ADDR of setting.At this moment, the interim BD_ADDR of generation should be not identical with the acquiescence BD_ADDR of contiguous blue-tooth device.If the interim BD_ADDR that produces is identical with the acquiescence BD_ADDR of contiguous blue-tooth device, then first blue-tooth device 200 notifies the user to go wrong, and stops Bluetooth communication.Interim BD_ADDR is different at every turn.When in step 409 when blue-tooth device receives query response message, first blue-tooth device 200 shows and the corresponding blue-tooth device tabulation of the query response message that receives in step 409.The user selects to be connected to the blue-tooth device of first blue-tooth device 200 from the tabulation that shows, for example, and second blue-tooth device 300, and input connection request.First blue-tooth device 200 is at the connection request of step 411 sensing user and enter step 413.First blue-tooth device 200 is carried out pairing, authenticates and is connected at the BD_ADDR of the selected blue-tooth device of step 413 use and from the PIN code of user's input, carries out Bluetooth communication thus.
If the user stops all Bluetooth communications in step 429 request, then first blue-tooth device 200 enters step 431, and to stop Bluetooth communication, the interim BD_ADDR that release and elimination are provided with is provided with acquiescence BD_ADDR, and enters step 403.In other words, because Bluetooth communication is supported point-to-multipoint delivery,, then use the interim BD_ADDR that is provided with to carry out all Bluetooth communications so, carry out Bluetooth communication with two or more blue-tooth devices if when interim BD_ADDR has produced and has been provided with.In addition, owing to can use interim BD_ADDR and a plurality of blue-tooth device to carry out Bluetooth communication,, then discharge and eliminate the interim BD_ADDR of setting if then stop using all Bluetooth communications of interim BD_ADDR.
Like this, according to the present invention,, then produce and be provided with interim BD_ADDR for Bluetooth communication if when being provided with safe mode, produce to carrying out connection requests with another blue-tooth device.In case Bluetooth communication stops, then discharge the interim BD_ADDR that is provided with and acquiescence BD_ADDR is set, prevent that thus another blue-tooth device from carrying out Bluetooth communication under the situation that binding is not handled.
With reference to Fig. 3 B, if the user asks inquiry scan mode in step 415 under safe mode, then first blue-tooth device 200 enters step 417 so that inquiry scan mode to be set, and enters step 419 subsequently.If receive query messages in step 419 from another device (for example, second blue-tooth device 300), then first blue-tooth device 200 enters step 421.First blue-tooth device 200 is in step 421 generation and interim BD_ADDR is set, and enters step 423.First blue-tooth device 200 will comprise that the query response message of the interim BD_ADDR of setting sends to blue-tooth device, and enter step 425.When in step 425 when described blue-tooth device receives the paging request, first blue-tooth device 200 enters step 427 to use interim BD_ADDR and to carry out pairing, authentication and be connected from the PIN code of user's input, carries out Bluetooth communication thus.First blue-tooth device 200 enters the step 429 of C with execution graph 3A subsequently.
If the user stops all Bluetooth communications in step 429 request, then first blue-tooth device 200 enters step 431, and to stop Bluetooth communication, the interim BD_ADDR that release and elimination are provided with is provided with acquiescence BD_ADDR, and enters step 403.In other words, because Bluetooth communication is supported point-to-multipoint delivery,, then use described interim BD_ADDR to carry out all Bluetooth communications so, carry out Bluetooth communication with two or more blue-tooth devices if when interim BD_ADDR has produced and has been provided with.In addition, owing to can use interim BD_ADDR and a plurality of blue-tooth device to carry out Bluetooth communication,, then discharge and eliminate the interim BD_ADDR of setting if then stop using all Bluetooth communications of interim BD_ADDR.
Like this, according to the present invention,, then produce and be provided with interim BD_ADDR for Bluetooth communication if under safe mode, produce to carrying out connection requests with another blue-tooth device.In case Bluetooth communication stops, then discharge the interim BD_ADDR that is provided with and acquiescence BD_ADDR is set, prevent that thus another blue-tooth device from carrying out Bluetooth communication under the situation that binding is not handled.
Although illustrated and described the present invention, it should be appreciated by those skilled in the art: under the situation that does not break away from the spirit and scope of the present invention, can make amendment with reference to the preferred embodiments of the present invention.For example, can remember to be used for carrying out the pattern of Bluetooth communication and use (profile application) by blue-tooth device, thereby only use when AD HOC and produce and be provided with interim BD_ADDR when being used to Bluetooth communication, described AD HOC application examples is as object push mode (OPP), serial ports pattern (SPP) and file transfer mode (FTP).

Claims (12)

1, a kind of method that is used for secured communication between Bluetooth devices, described method comprises:
If under safe mode, produce the Bluetooth communication request, then produce and interim bluetooth device address is set, and use interim bluetooth device address to carry out Bluetooth communication; And
When stopping Bluetooth communication, discharge and eliminate described interim bluetooth device address and the acquiescence bluetooth device address is set.
2, the method for claim 1 also comprises:
If under safe mode,, then produce and be provided with the first interim bluetooth device address from the detection request of user's request to contiguous blue-tooth device;
Broadcasting comprises the query messages of the first interim bluetooth device address;
Use the first interim bluetooth device address and the blue-tooth device of selecting from blue-tooth device corresponding to the query response message that receives by the user to carry out Bluetooth communication; And
When stopping Bluetooth communication, discharge and eliminate the first interim bluetooth device address, and the acquiescence bluetooth device address is set.
3, the method for claim 1 also comprises:
Under safe mode, inquiry scan mode is set;
When blue-tooth device receives query messages, produce and be provided with the second interim bluetooth device address, and send the query response message that comprises the second interim bluetooth device address;
When described blue-tooth device receives page response, use the second interim bluetooth device address execution Bluetooth communication; And
When stopping Bluetooth communication, discharge and eliminate the second interim bluetooth device address, and the acquiescence bluetooth device address is set.
4, method as claimed in claim 2, wherein, if a plurality of blue-tooth devices are carried out Bluetooth communication with the blue-tooth device that uses the first interim bluetooth device address, then after all Bluetooth communications of termination and described a plurality of blue-tooth devices, discharge and eliminate the first interim bluetooth device address, and the acquiescence bluetooth device address is set.
5, method as claimed in claim 3, wherein, if a plurality of blue-tooth devices are carried out Bluetooth communication with the blue-tooth device that uses the second interim bluetooth device address, then after all Bluetooth communications of termination and described a plurality of blue-tooth devices, discharge and eliminate the second interim bluetooth device address, and the acquiescence bluetooth device address is set.
6, the method for claim 1, wherein giving tacit consent to bluetooth device address is to distribute to the unique address of blue-tooth device.
7, a kind of equipment that is used for secured communication between Bluetooth devices, described equipment comprises:
Bluetooth module is used to use the bluetooth device address of setting to carry out Bluetooth communication; And
Controller if be used under safe mode producing the Bluetooth communication request, then produces and is provided with interim bluetooth device address, when stopping Bluetooth communication, discharges and eliminates interim bluetooth device address, and the acquiescence bluetooth device address is set.
8, equipment as claimed in claim 7, wherein, if under safe mode, ask being close to the detection request of blue-tooth device from the user, then controller produces and is provided with the first interim bluetooth device address, when stopping Bluetooth communication, controller discharges and eliminates the first interim bluetooth device address, and the acquiescence bluetooth device address is set; And
Bluetooth module broadcasting comprises the query messages of the first interim bluetooth device address, and uses the first interim bluetooth device address and the blue-tooth device of being selected from blue-tooth device corresponding to the query response message that receives by the user to carry out Bluetooth communication.
9, equipment as claimed in claim 8, wherein, if under safe mode, ask being close to the detection request of blue-tooth device from the user, then controller produces and is provided with the second interim bluetooth device address, when stopping Bluetooth communication, controller discharges and eliminates the second interim bluetooth device address, and the acquiescence bluetooth device address is set; And
Bluetooth module broadcasting comprises the query messages of the second interim bluetooth device address, and uses the second interim bluetooth device address and the blue-tooth device of being selected from blue-tooth device corresponding to the query response message that receives by the user to carry out Bluetooth communication.
10, equipment as claimed in claim 9, wherein, if a plurality of blue-tooth devices are carried out Bluetooth communication with the blue-tooth device that uses the first interim bluetooth device address, then after all Bluetooth communications of termination and described a plurality of blue-tooth devices, controller discharges and eliminates the second interim bluetooth device address, and the acquiescence bluetooth device address is set.
11, equipment as claimed in claim 10, wherein, if a plurality of blue-tooth devices are carried out Bluetooth communication with the blue-tooth device that uses the second interim bluetooth device address, then after all Bluetooth communications of termination and described a plurality of blue-tooth devices, controller discharges and eliminates the second interim bluetooth device address, and the acquiescence bluetooth device address is set.
12, equipment as claimed in claim 7, wherein, the acquiescence bluetooth device address is to distribute to the unique address of blue-tooth device.
CN2007100070697A 2006-02-08 2007-02-08 Method and apparatus for secured communication between bluetooth devices Expired - Fee Related CN101026394B (en)

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KR10-2006-0012293 2006-02-08
KR1020060012293A KR100735382B1 (en) 2006-02-08 2006-02-08 Security communication method and apparatus in bluetooth terminal

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US20070202806A1 (en) 2007-08-30
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US7860456B2 (en) 2010-12-28

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